Case of the Haunted Standard Car Assets?

So i imported unity 5 assets to get the car controller scripts. i managed to set up my car that same as the standard assets car yet my car starts floating around. As you can see in the picture, there are no colliders pushing it and the wheel all turn to the left and stay there. When i press 'S' all the wheels rotate the wrong way and don't even rotate when i press 'W'.

I really can't think of what is causing it to happen. it may be me being stupid, but can anybody help please?

Man, some of these problems are pretty old and haven't been answered. Uncheck the CarController component and press play in the editor. If the vehicle rests fine on your platform then the problem is with your RigidBody which means you'll have to check your colliders. My guess is that your 0.143 scale is the problem.